Synthesis and SAR studies of a novel series of T-type calcium channel blockers
摘要:
For the novel, potent, and selective T-type Ca2+ channel blockers, a series of sulfonamido-containing 3,4-dihydroquinazoline derivatives were prepared and evaluated for their blocking actions on T- and N-type Ca2+ channels. Among them, 9c (KYS05064, IC50 = 0.96 +/- 0.22 mu M) was found to be as potent as Mibefradil and also showed the highest selectivity for T-type Ca2+ channel with no effect on N-type Ca2+ channel. (c) 2006 Published by Elsevier Ltd.
Conjugated heterocumulenes. Synthesis of conjugated carbodiimides and their facile conversion via intramolecular cycloaddition into nitrogen heterocycles, quinoline and pyrido[2,3-b]indole (α-carboline) derivatives
A convenient method is described for the synthesis of conjugated carbodiimides and their application to nitrogen heterocycle synthesis via electrocyclisationâintramolecular DielsâAlder reaction.
Periselective, Lewis acid-induced intramolecular Diels–Alder reaction of conjugated carbodiimides: efficient synthesis of nitrogen heterocycles, indolo[2,3-b]quinolines and pyrido[2,3-b]indole
A suitable Lewis acid has been found that accelerates the intramolecular DielsâAlder reaction of conjugated carbodiimides with high periselectivity control, thus providing an efficient and straightforward procedure for constructing indolo[2,3-b]quinoline and pyrido[2,3-b]indole frameworks.
A facile and efficient carbodiimide-mediated synthesis of dihydroquinazolines via a tandem nucleophilic addition-intramolecular hetero conjugate addition annulation strategy
作者:Takao Saito、Kensaku Tsuda、Yoji Saito
DOI:10.1016/0040-4039(95)02130-2
日期:1996.1
A novel and efficient method is described for the synthesis of dihydroquinazoline derivatives which involves initial addition of a nucleophile (alcohol, amine and thiol) to the carbodiimide cumulenic system followed by intramolecular heteroconjugateadditionannulation.
Synthesis of 2-Substituted 3,4-Dihydroquinazoline Derivatives via Regioselective Addition of a Carbon Nucleophile to a Carbodiimide
作者:Jae Yeol Lee、Bum Hoon Lee、Bong Young Chung、Yong Sup Lee
DOI:10.3987/com-03-9901
日期:——
Growth inhibition of human cancer cells in vitro by T-type calcium channel blockers
作者:Jae Yeol Lee、Seong Jun Park、Sung Jun Park、Min Joo Lee、Hyewhon Rhim、Seon Hee Seo、Ki-Sun Kim
DOI:10.1016/j.bmcl.2006.07.046
日期:2006.10
This paper describes the preliminary biological results that novel T-type calcium channel blockers inhibit the growth of human cancer cells by blocking calcium influx into the cell, based on unknown mechanism on the cell cycle responsible for cellular proliferation. Among the selected compounds from compound library, compound 9c (KYS05041) was identified to be nearly equipotent with Cisplatin against some human cancers in the micromolar range. (c) 2006 Elsevier Ltd. All rights reserved.